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磁性地层学测量与对比研究表明：（１）静乐贺丰地点的静乐红土即为红色土Ａ层，记录了Ｇａｕｕｓ正极性带，年龄为２．５０～３．００Ｍａ，时代为晚上新世。榆林剖面红土记录了Ｇａｕｕｓ正极性带与Ｇｉｌｂｅｒｔ负极性带，年龄为２．５０～５．００Ｍａ，时代为上新世。（２）静乐剖面红色土Ｂ层相当于黄土—古土壤序列ＷＳ—１，ＷＳ—２，ＷＳ—３或Ｓ１５—Ｓ３２地层段，记录了Ｏｌｄｕｖａｉ与Ｒｅｕｎｉｏｎ正极性带，年龄约１．２０～２．３０Ｍａ，时代为早更新世早期。（３）榆林河沿岸红色土Ｃ带，主体为离石黄土，大致为Ｓ１—Ｌ１５地层段，部分地段出露午城黄土。
The magnetic stratigraphic measurements and contrast studies show that: (1) Jingle limestone is the A layer of red soil in Jueluo Hefeng site, which records the positive polarity band of Gauus with an age of 2.50 ~ 3.00Ma and an age of Late Pliocene . The Yulin profile laterite recorded the positive polarity band of the Gauus and the negative polarity band of Gilbert, with an age of 2.50-5.000Ma and an age of Pliocene. (2) The B layer of red soil in Jingle section is equivalent to WS-1, WS-2, WS-3 or S15-S32 of loess-palaeosol sequence, and records the positive polarity belt of Olduvai and Reunion with an age of about 1.20 ~ 2.30Ma, Early Pleistocene epoch. (3) The c-band of red soil along the Yulin River is mainly composed of feldspar loess, generally S1-L15 strata, and part of Wucheng loess is exposed.